09/01/2008 at 10:00 AM EDT
One week after her ex husband Kevin Federline headed to Las Vegas
, it was now Britney Spears
's turn to hit Sin City this weekend.
Their visits to Vegas, however, couldn't have been more different. While Federline bounced around from several clubs last weekend, Spears's trip was more low-key, consisting mainly of relaxing by the pool and taking in a show over Labor Day weekend.
After arriving via private jet on Saturday night, Spears, 26, headed to her plush room at the Mirage Hotel and Casino
's exclusive villas, complete with a private patio and private pool.
On Sunday, rather than staying by her private pool, Spears made her way to Bare Pool where she sipped Fiji bottled water and sunned in the VIP area.
"Her body looked great," an onlooker said. "It looks like she's getting her body back, back to the old Britney."
Staying an hour and a half, Spears texted from her phone and rarely moved from her lounge chair, getting up only to take a quick dip in the pool. Wearing a bikini top and jean shorts, Spears hung out with a group of friends that included her hairstylist Kim Vo.
While Spears basked in the high Vegas heat, a familiar face meandered through the Mirage – her ex boyfriend, photographer Adnan Ghalib
. The paparazzo and Spears did not see each other in public though they were within a few yards of each other several times.
After lounging by the pool, Spears made a quick run to Siegfried and Roy's Secret Garden and headed to her room for several hours. She later took in Cirque du Soleil's Love
show before calling it a night.
The singer, who recently appeared in ads
for the upcoming MTV Video Music Awards, is rumored to make an appearance on the Sept. 7 show. Spears is nominated for three Moonmen
this year – video of the year, best female video and best pop video for "Piece of Me."